Safety device for firearms.



J. M. BROWNING.

SAFETY DEVICE FOR FIREARMS.

APPLICATION FILED MAR. 20, 1913.

Patented June 24, 1913.

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IN VEN TOR WITNESSES breech block 2.

i sire iin vrclngrj' Tohll uikoin'it may concern: I

Be it known that 1, JOHN M. BROWMNG, a citizen of the United States,resident of Ogden, Utah, have inventedccrtain new and usefulImprovements in Safety Devices for Firearms, of which the following isav specification.

My invention relates to a-safety device or safety stop for firearms.

A principal object of the invention is to prevent the locking of thesear in safety position when the hammer is uncooked. Means foraccomplishing this is adapted asherein disclosed to a structure in whichthe sear is free from the hammer after the trigger has been pulled anduntil the hammer is cocked again. In structures which permit locking ofthe sear when the hammer is uncooked, and the hammer is free from thesear, it is usually impossible to cock the gun because the searobstructs the rearward movement of the hammer.

The inventionconsists in instrumentalities and combinations thereof forcarrying out the above and other objects, as will be sufficientlyexplained hereinafter.

The accompanying drawing shows an eX emplifying structure embodying theinvention, and it is to be understood that the construction may bevaried greatly within the limits of the invention. Figure 1 is alongitudinal section of a gun-frame with inclosed mechanism, sufficientparts being shown to understand the cooperation of the safety devicewith other essential parts of a firearm structure. Fig. 2 is an enlargedview of a fragment of Fig. 1, showing the safety stop in active posilion. Fig. 3 is a transverse section in the vertical plane of the stop.Fig. 4 is a perspective view of the safety stop or pin removed from thegun.

Reference character 1 designates a gunframe containing atrigger-plate 1. Slidably mounted on the trigger-plate is a The breechblock carries a cocking lug 3 extending down through slot l in thetriggenplate. Slidably mounted within the breech-block is the firing pin5 actuated by spring 6. The rear end of the spring abuts against therear end '7 of the trigger-plate. Near the rear end the han Iner isprovided with a cock-notch 8. In the trigger-plate is pivoted sear 10adapted to engage the cock notch. The sear is urged to engaging positionby spring 11 and 1s irormrivi. B nowmne', .ortoennn umn iif-IBEARFISQSpecification otLet-ters Patent. Pat ne u 3 Application filed March 20,1913. Serial No. 755,646.

prevented from moving too fa r in that direction by sear member 26;engaging -the the trigger-plate at 15 and carries a pivoted connector 16cooperating with notch 17 on the sear. Adjacent to the lower end of thesear the safety stop or pin 18 is mounted in a transverse socket 19. Forconvenience, this safety pin is usually round and is prevented fromrotating by a spring-pressed plunger 20 carried in the trigger-plate.and engaging a longitudinal groove 21 in the pin. At each end of thisgroove is a depression cooperating with the plunger 20 to hold the pinin either engaged or disengaged position. The lower end of the sear isshaped to embrace the pin as at 25. A member 26 of the sear liesnormally in front of the pin and another member 27 lies to the rear ofthe pin when the arm is cocked, as shown in Fig. 2. At a pointoppositethe sear, when the pin is in inactive or firing position, the pin isprovided with a forwardly arranged depression, cut or groove 30, adaptedto cooperate with sear member 26, and at the same point in its lengththe pin is also provided with an upwardly and rearwardly arranged cut ordepression 31 adapted to cooperate with sear member 27.

When the hammer is forward or uncooked, as shown in Fig. 1, it is freefrom the sear and sear spring 11 holds sear mem- 38F 26 in engagementwith cut 30 of the safety pin 18. Therefore, the pin cannot be moved tosafety position until released from the sear. lVhen the hammer iscocked, either by hand or by automatic action, the sear 10 engaging withcock notch 18 of the hammer is held down sufficiently, as shown inFig.2, to free sear member 26 from out 30 of the pin. The pin may then bemoved to sa fcty position as shown in F ig. 2. Here the cuts or grooves30 and 31 of the pin are entirely away from the scar and the iuer byreason of the close engagement of its part 25 with the safety pin andthe gun cannot he accidentally discharged either by pulling the triggeror otherwise.

for determining whether the gun is cocked or not, because if itis notcocked the scar will engage cut 30 and prevent the safety pin from beingmoved to safety position,

moved to safety position, as above described.

safety-pin 18. 'lhe -trigger ld 'lnis pivotedirr sear is locked inengagement with the ham- The mechanism described affords means while ifthe gun is cocked the pin can be Without the provision of cut 30 thesear will not be locked by the safety pin when the hammer is uncookedand the pin could, therefore, be moved to safety osition, thus lockingthe sear, and then i it were attempted to. cook the hammer it would beimpossible to do so because the sear would not be free to depress andallow the hammer to pass back sufliciently to engage cocknotch 8 withthe sear.

I claim:

1. In a firearm, the combination of a ham mer, a sear and a safety pinmounted to move laterally in relation to the sear to lock the same whenthe hammer is cocked, the

sear and pin being provided with co6perating means to prevent the pinfrom being moved to safety position when the hammer is not cocked.

2. In a firearm, the combination of a frame, a sear,a hammer free fromthe sear when uncooked, a safety pin mounted to move laterally in theframe, and means by which the safety pin is engaged with the sear andprevented from movlng to safety position when the hammer is not cooked.'

JOHN M. BROWNING. Witnesses:

L. M. TAYLOR, Murrnnw GALT.

